RT Book, Section
A1 Blome, Andrea L.
A1 Healy, Megan E.
A2 Sherman, Scott C.
SR Print(0)
ID 1154632552
T1 Wrist
T2 Simon's Emergency Orthopedics, 8e
YR 2019
FD 2019
PB McGraw-Hill Education
PP New York, NY
SN 9781259860829
LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1154632552
RD 2024/04/19
AB The  wrist  comprises  eight  carpal  bones  that  articulate  with  the  radius  proximally  and  the  metacarpals  distally.  Motions  include  flexion,  extension,  radial  deviation,  and  ulnar  deviation.  The  carpal  bones  are  divided  into  a  proximal  row  of  four  bones  and  a  distal  row  of  four  bones  (Fig.  12–1).  The  proximal  row,  from  radial  to  ulnar  surfaces,  includes  the  scaphoid,  lunate,  and  triquetrum.  The  distal  row,  from  radial  to  ulnar  surfaces,  includes  the  trapezium,  trapezoid,  capitate,  and  hamate.  The  pisiform,  a  sesamoid  bone  enclosed  in  the  sheath  of  the  flexor  carpi  ulnaris  tendon,  lies  adjacent  to  the  volar  surface  of  the  triquetrum  and  does  not  articulate  with  the  forearm  bones  or  with  any  of  the  remaining  carpal  bones.1